image

问题 Hey I am new to Xcode and need of assistance in uploading my profile image from firebase database to my user profile. I have receive no errors so far but the image is not appearing when my user logs in, the image is already stored in firebase but when I attach the UIImageView to the user profile the image shows up blank do anyone have a solution to fix this code to make my image appear on the user profile once they log in it should be automatic? typealias blockCompletedWith = (Bool, String) -

问题 I have the following code to read a black-white picture in java. imageg = ImageIO.read(new File(path)); BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_USHORT_GRAY); Graphics g = bufferedImage.createGraphics(); g.drawImage(image, 0, 0, null); g.dispose(); int w = img.getWidth(); int h = img.getHeight(); int[][] array = new int[w][h]; for (int j = 0; j < w; j++) { for (int k = 0; k < h; k++) { array[j][k] = img.getRGB(j, k);

问题 I'm trying to load an image to a JavaFX project. I'm doing it by calling the absolute path Users/user/Desktop/nfc.png . Is there any way to create a resource folder inside the project and calling from it the image? Below is my code: package sample; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.scene.image.Image; import javafx.stage.Stage; import java.awt.Taskbar; import java.awt.image.BufferedImage;

问题 I'm trying to load an image to a JavaFX project. I'm doing it by calling the absolute path Users/user/Desktop/nfc.png . Is there any way to create a resource folder inside the project and calling from it the image? Below is my code: package sample; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Parent; import javafx.scene.Scene; import javafx.scene.image.Image; import javafx.stage.Stage; import java.awt.Taskbar; import java.awt.image.BufferedImage;

问题 GIMP has a convenient function that allows you to convert an arbitrary color to an alpha channel. Essentially all pixels become transparent relative to how far away from the chosen color they are. I want to replicate this functionality with opencv. I tried iterating through the image: for x in range(rows): for y in range(cols): mask_img[y, x][3] = cv2.norm(img[y, x] - (255, 255, 255, 255)) But this is prohibitively expensive, it takes about 10 times longer to do that iteration than it takes

问题 Preload may not be the correct term... I have a page which loads a very large image. I wanted to wait for the large image to completly load before displaying on the page for the user. At the moment, I have a loading gif and i'm using javascript to wait for the image to load and then replace the loading gif src with the image: <img src="loading.gif" id="image" /> <script> img = 'very_large_image.jpg'; var newimg = new Image(); newimg.src = img; newimg.onload = function(){ $('#image').attr('src

问题 Preload may not be the correct term... I have a page which loads a very large image. I wanted to wait for the large image to completly load before displaying on the page for the user. At the moment, I have a loading gif and i'm using javascript to wait for the image to load and then replace the loading gif src with the image: <img src="loading.gif" id="image" /> <script> img = 'very_large_image.jpg'; var newimg = new Image(); newimg.src = img; newimg.onload = function(){ $('#image').attr('src

问题 I want to straight an image by selecting four points in the image using getPerspectiveTransform() method of opencv in java. I know it can be done using with opencv in python: getPerspectiveTransform. If anyone used this to achieve image straightening ..please help. 回答1: There is perspective transformation which can be used to achieve quad to quad conversion. In OpenCV , there are mainly two methods to achieve getPerspectiveTransformation() and warpPerspective() method. Here is a sample code

问题 I want to straight an image by selecting four points in the image using getPerspectiveTransform() method of opencv in java. I know it can be done using with opencv in python: getPerspectiveTransform. If anyone used this to achieve image straightening ..please help. 回答1: There is perspective transformation which can be used to achieve quad to quad conversion. In OpenCV , there are mainly two methods to achieve getPerspectiveTransformation() and warpPerspective() method. Here is a sample code

问题 I'm trying to make a memory card matching game in python and I have a folder called 'icons' that has the 21 images that I want to use. I created the buttons in a 6x7 grid using for loops. I put the buttons in a list called buttons which I will later use to keep track of which buttons are still empty and are available for putting images. Using a for loop, I loop over the images in the folder. For each image, I choose a random button from the list which will contain the image. I then remove